Gasket



Apri] 2l, 1931. W w, KNIGHT 1,802,177

GASKET Filed July 14, i19:28

v 14M .iff/f? MWI* IIIIIIIIII I III mIenIr I PatentedlpreZl, 1931y I ,UNITEo STATES PATENT OFFICE WILLIAM W. KNIGHT, OF EVANBTON, ILLINOIS, .ABSIGNOR TO ROTH RUBBER COMPANY,

OF CICERO, ILLINOIS, A. CORPORATION l' ILLINOIS I amm \ Application led -J'uly 14, 1988. Serial No'. 892,895.

This invention relates to new and useful improvements in gaskets and more particularlyy to an improved form of annular rub-k ber gasket adapted to maintain a fluid-tight ljpin't between two relatively movable memeIS.

This improved gasket is hollow and the spaced side walls are yieldabl `held apart by a plurality of ribs positione between and connectin diagonnaly across` the space between the side walls. These diagonal rlbs serve to pieldably hold the walls apart, without undu diminishing the resiliency of the side Wal s at any .15j localized points.

The general object of this invention isl to provide an improved gasket -of the form briefly described hereinabove, a`nd disclosed more in detail in the description which follows.

Other objects and advanta s of the invention will be more apparent rom the following detailed descriptlon of vcertain approved vforms of gaskets involving the principles of this invention. .Y

In the accompanying drawings: U

Fig. 1 is a central section through a swive eled pipe joint, equipped with one of these improved gaskets.

Fig. 2 is a central verticalsection throu h one of the gaskets, the view being taken su stantially on the line 2-2 of Fig. 3.

Fig. 3 is a central horizontal section through one of the gaskets, the view being taken substantially on the line'3-3 of Fig. 2.

- Fig. 4 is a sectional view, similar to 2, showing a different form of gasket 1nvolving the principles of this invention.

Fig. 5 is a plan view of the gasket shown in Fi 4. n

In Fig. J1 is shown a swiveled pi e joint connecting the two pipe sections 1 an 2. On member 3 of this joint is screwed a collar 4 which overla s a shoulder 5 on the other member 6 of t e joint, so as to hold the members 3 and 6 together, but permit relative rotation therebetween. The adjacent faces of `the members 3 and 6 are recessed at 7 and 8 to receive the resilient annular gasket 9, of

triangular cross section. Thisv gasket 9 comthe side walls, the ribs extending of the gasket, but diverge radially inward so as to leave an open space therebetween. The gaskety is clam ed snugly between the members 3 and 6 y screwing down the collar 4, and the gasket is also ex anded against the metallic joint members y -the Huid pressure wthin the pipe joint acting within the space 12 between the side members of the gasket. l

lIn some installations, there is a great vamation in the pressure within the joint at different times, and under certain conditions the internal ressure within the joint is not s'uicient to eep, the side members of the gasket properly expanded unless bracing means is provided within the space 12 be-l tween the side Walls 10 and 11. For example, in apparatus used in the process of bakelite molding, this 4pipe connection at times contalns steam and at other times cold water,

so that the internal pressure varies from approximatel 150 pounds down to avery low ressure. nder such conditions, it has been ound that these gaskets will not maintain a iluid-ti ht connection ,unless bracing means integrally with the remainder of the gasket of. rubber or other suitable resilient material. rIf these ribs were disposed perpendicularly to the side walls, the gasket would be diixi- 'cult to compress at those locations where the ribs were disposed, and much easier to compress between the ribs, so that humps would be formed, thus decreasin the efiiciency of the gasket. By disposin t e ribs diagonally on the space 12, t e ri is not compressed lorfilgitudinally to as great an extent,I but is de ected laterally thereby increasing the resiliency ofthe gas et, while at the same time stiifenmg same suiciently to Aavoid collapsing of the side wallsunder all condiv tions. f

The use of this invention is not limited to the specific t of gasket disclosed in Figs? 1, 2and 3. Figs. 4 and 5, is shown a dif:

ferent type of gasket 14 adapted for use in an annular recess in a piston to form fluidtight connection with the side walls of a c linder, for example in ahydraulic press. T is gasket comprises inner and outer annular side walls 15 and 16, connected by a radial bottom wall 17 .Y The side walls 15 and 16 are connected b diagonally disposed ribs 18 which function the same as in the first described modification, to brace the side walls without materially lnterfering with the resilbiency at the locations connected by the r1 s.

While these gaskets are preferably formed of rubber, or a rubber composition, other resilient material might be used. 'Also the gaskets might be made in other forms than those here shown by way of example, without departing from the principles of this invention as set forth in the following claims.

I claim:

1. A hollow flexible gasket comprising s aced side walls connected by diagonally disposed ribs. v

2. A hollow annular rubbergasket comprising side walls connected at the outer circumference of the gasket and diverging radially inward, and a plurality of ribs interposcd between and connecting the side walls and extending diagonally across the space between the walls.

3. A hollow annular rubber gasket comprising side walls connected at the outer circumference of the gasket and diverging radially inward, and a plurality of ribs integrally joined at their ends to the side walls and interposed between .and connecting the side walls, the ribs extending diagonally across the space between the walls so as to form acute angles therewith.

WILLIAM W. KNIGHT. 

